Domain walls of D = 8 gauged supergravities and their D = 11 origin
Abstract
Performing a ScherkSchwarz dimensional reduction of D=11 supergravity on a threedimensional group manifold we construct five D=8 gauged maximal supergravities whose gauge groups are the threedimensional (non)compact subgroups of SL(3,R). These cases include the SalamSezgin SO(3) gauged supergravity. We construct the most general halfsupersymmetric domain wall solutions to these five gauged supergravities. The generic form is a triple domain wall solution whose truncations lead to double and single domain wall solutions. We find that one of the single domain wall solutions has zero potential but nonzero superpotential. Upon uplifting to 11 dimensions each domain wall becomes a purely gravitational 1/2 BPS solution. The corresponding metric has a 7+4 split with a Minkowski 7metric and a 4metric that corresponds to a gravitational instanton. These instantons generalize the SO(3) metric of Belinsky, Gibbons, Page and Pope (which includes the EguchiHanson metric) to the other Bianchi types of class A.
 Publication:

Journal of High Energy Physics
 Pub Date:
 June 2003
 DOI:
 10.1088/11266708/2003/06/038
 arXiv:
 arXiv:hepth/0303113
 Bibcode:
 2003JHEP...06..038A
 Keywords:

 Solitons Monopoles and Instantons Superstring Vacua Gauge Symmetry;
 High Energy Physics  Theory
 EPrint:
 23 pages, 1 figure, minor changes, references added